package com.sys.console.common.kindeditor;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.druid.util.StringUtils;
import com.aliyun.oss.OSSClient;
import com.bm.console.common.OSSConfig;
import com.sys.object.common.utils.OSSUtil;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;
import org.json.simple.JSONObject;

import com.sys.console.common.ConstantSys;
import com.sys.object.common.utils.Base64Helper;
import com.sys.object.common.utils.FileSaveByHttpsUtils;



public class KindUploadServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public KindUploadServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the GET method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		try{//
			//List<MultipartFile> picupload = request.getFiles("file");
			//Gson obj = new Gson();
			JSONObject obj = new JSONObject();
			PrintWriter out = response.getWriter();
			//response.setContentType("application/json; charset=UTF-8");
			response.setContentType("text/html; charset=UTF-8");
			request.setCharacterEncoding("UTF-8");
			response.setCharacterEncoding("UTF-8");
			HashMap<String, String> extMap = new HashMap<String, String>();
			extMap.put("image", "gif,jpg,jpeg,png,bmp");
			extMap.put("flash", "swf,flv");
			extMap.put("media", "swf,flv,mp4,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");
			extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2,pdf");
			//最大文件大小
			long maxSize = (1024*1024*15);
			long maxSize_modia = (1024*1024*300);
	
			if(!ServletFileUpload.isMultipartContent(request)){
				out.println(getError("请选择文件"));
				out.flush();
				out.close();
				return;
			}
	
			String dirName = request.getParameter("dir");
			if (dirName == null) {
				dirName = "image";
			}
			if(!extMap.containsKey(dirName)){
				out.println(getError("目录名不正确。"));
				out.flush();
				out.close();
				return;
			}
	
			FileItemFactory factory = new DiskFileItemFactory();
			ServletFileUpload upload = new ServletFileUpload(factory);
			upload.setHeaderEncoding("UTF-8");
			List items = upload.parseRequest(request);
			Iterator itr = items.iterator();
			if(!itr.hasNext()){
				out.println(getError("没有收到任何文件。"));
				out.flush();
				out.close();
				return;
			}
			while (itr.hasNext()) {
				FileItem item = (FileItem) itr.next();
				String fileName = item.getName();
				long fileSize = item.getSize();
				//检查扩展名
				if (!item.isFormField()) {
					String fileExt = FilenameUtils.getExtension(fileName);// fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
					//检查文件大小
					if(extMap.get("media").contains(fileExt)||extMap.get("flash").contains(fileExt)){
						if(item.getSize() > maxSize_modia){
							if(item.getSize() > maxSize){
								out.println(getError("上传影片或动画文件大小150M超过限制。"));
								out.flush();
								out.close();
								return;
							}
						}
					}else{
						if(item.getSize() > maxSize){
							out.println(getError("上传文件大小5M超过限制。"));
							out.flush();
							out.close();
							return;
						}
					}
					
					
					if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
						out.println(getError("上传文件扩展名是不允许的扩展名。\n只允许" + extMap.get(dirName) + "格式。"));
						out.flush();
						out.close();
						return;
					}
	
					SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
					String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt;
					try{

						byte[] data = Base64Helper.inputStreamToBytes(item.getInputStream());
						//String md5Url = new FileSaveByHttpsUtils().postBytesStreamToStr(ConstantSys.FILE_SERVER, data);
						//System.err.println("md5Url==>>"+md5Url);
						OSSClient ossClient = new OSSClient(OSSConfig.oss_endpoint, OSSConfig.oss_accessKeyId,
								OSSConfig.oss_accessKeySecret);

						String eTag = OSSUtil.uploadObject2OSS(ossClient, data, newFileName, OSSConfig.oss_backetName, "kindeditor/");
						String picUrl = null;
						if (!StringUtils.isEmpty(eTag)) {
							picUrl = OSSConfig.oss_domain + "kindeditor/" + newFileName;
						}


						obj.put("md5", picUrl);
						obj.put("url", picUrl);
					}catch(Exception e){
						out.println(getError("上传文件失败"));
						out.flush();
						out.close();
						return;
					}
					obj.put("error", 0);
					out.println(obj.toJSONString());
					out.flush();
					out.close();
				}
			}
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	
	private String getError(String message) {
		JSONObject obj = new JSONObject();
		try{
			obj.put("error", 1);
			obj.put("message",message);
		}catch(Exception e){
			e.printStackTrace();
		}
		//System.out.println("json数据====："+obj.toJSONString());
		return obj.toJSONString();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
